1 files changed, 43 insertions, 0 deletions
diff --git a/spec/javascripts/ide/components/ide_external_links_spec.js b/spec/javascripts/ide/components/ide_external_links_spec.js
new file mode 100644
index 00000000000..9f6cb459f3b
--- /dev/null
+++ b/spec/javascripts/ide/components/ide_external_links_spec.js
@@ -0,0 +1,43 @@
+import Vue from 'vue';
+import ideExternalLinks from '~/ide/components/ide_external_links.vue';
+import createComponent from 'spec/helpers/vue_mount_component_helper';
+
+describe('ide external links component', () => {
+  let vm;
+  let fakeReferrer;
+  let Component;
+
+  const fakeProjectUrl = '/project/';
+
+  beforeEach(() => {
+    Component = Vue.extend(ideExternalLinks);
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('goBackUrl', () => {
+    it('renders the Go Back link with the referrer when present', () => {
+      fakeReferrer = '/example/README.md';
+      spyOnProperty(document, 'referrer').and.returnValue(fakeReferrer);
+
+      vm = createComponent(Component, {
+        projectUrl: fakeProjectUrl,
+      }).$mount();
+
+      expect(vm.goBackUrl).toEqual(fakeReferrer);
+    });
+
+    it('renders the Go Back link with the project url when referrer is not present', () => {
+      fakeReferrer = '';
+      spyOnProperty(document, 'referrer').and.returnValue(fakeReferrer);
+
+      vm = createComponent(Component, {
+        projectUrl: fakeProjectUrl,
+      }).$mount();
+
+      expect(vm.goBackUrl).toEqual(fakeProjectUrl);
+    });
+  });
+});